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Date: Sat, 15 Oct 2011 11:31:12 +0000 (UTC)
From: "Ahmed Radwan (Commented) (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
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Subject: [jira] [Commented] (MAPREDUCE-2788) Normalize requests in
 FifoScheduler.allocate to prevent NPEs later
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    [ https://issues.apache.org/jira/browse/MAPREDUCE-2788?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13128136#comment-13128136 ] 

Ahmed Radwan commented on MAPREDUCE-2788:
-----------------------------------------

Yes, it makes sense now. Thanks
                
> Normalize requests in FifoScheduler.allocate to prevent NPEs later
> ------------------------------------------------------------------
>
>                 Key: MAPREDUCE-2788
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2788
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Ahmed Radwan
>            Assignee: Ahmed Radwan
>         Attachments: MAPREDUCE-2788.patch, MAPREDUCE-2788_rev2.patch, MAPREDUCE-2788_rev3.patch
>
>
> The assignContainer() method in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue can cause the scheduler to crash if the ResourseRequest capability memory == 0 (divide by zero).

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